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The end connection part of the ultra-low temperature cable

A technology of ultra-low temperature and connecting parts, which is applied in the field of terminal devices, can solve the problems of the reduction of superconducting characteristics, and achieve the effects of compact structure, good insulation performance and damage prevention

Inactive Publication Date: 2018-09-28
SWCC SHOWA CABLE SYST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the temperature of the cryogenic equipment rises above the specified temperature due to the influx of heat, the superconducting properties will decrease.

Method used

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  • The end connection part of the ultra-low temperature cable

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Embodiment Construction

[0070] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[0071] figure 1 It is a longitudinal sectional view showing the structure of a superconducting cable terminal device as a terminal device of a cryogenic facility according to an embodiment of the present invention. A superconducting cable terminal device 100 as a terminal device of a cryogenic device is connected to a superconducting cable 200 as a cryogenic device.

[0072] The superconducting cable end device 100 has a bushing 110 , a connection portion 120 , a liquid nitrogen tank 130 , and a vacuum vessel 140 .

[0073] The connecting portion 120 is a portion that electrically connects the conductor lead-out rod 111 and the superconducting cable 200 . In this embodiment, the connection part 120 has a flexible conductor 121 for connecting to the conductor lead-out rod 111 , and a conductor connection part 122 for electrically connecting the flexible condu...

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Abstract

The invention provides a terminal device of ultra-low temperature equipment. The terminal device of the cryogenic device is a compact terminal device capable of sufficiently suppressing the inflow of heat into the cryogenic device such as a superconducting cable, having good insulation performance, and preventing damage due to thermal shrinkage. The bushing 110 includes: a conductor lead-out rod 111; an insulating tube 112 made of epoxy resin; a polymer cover 113 formed with a plurality of folds 113a at intervals in the longitudinal direction; and a head 117 made of epoxy resin . The polymer covering body 113 is arranged in a normal temperature region, and the head 117 and the conductor lead-out rod 111 exposed from the lower end of the head 117 are arranged in a vacuum region. In addition, the lower end of the conductor lead-out rod 111 is connected to the cryogenic equipment-side conductor in the cryogenic region via the flexible conductor 160 disposed in the vacuum region.

Description

technical field [0001] The invention relates to terminal devices of ultra-low temperature equipment such as superconducting cables. Background technique [0002] The terminal device of ultra-low temperature equipment such as superconducting cables has a conductor lead-out rod whose one end is electrically connected to the ultra-low temperature equipment and the other end is led out to the normal temperature part. The conductor lead-out bar is generally composed of copper, which is a good conductor of electricity and heat, and therefore heat flows from the normal temperature region to the ultra-low temperature region (ie, the ultra-low temperature device) through the conductor lead-out bar. When the temperature of the cryogenic device rises higher than a predetermined temperature due to the influx of heat, the superconducting characteristics are lowered. Therefore, it is important to minimize the inflow of heat through the conductor lead-out rod in the terminal device of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02G15/34
CPCH02G15/34Y02E40/60
Inventor 足立和久
Owner SWCC SHOWA CABLE SYST CO LTD